<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<link rel="stylesheet" href="css/screen.css">
		<script src="js/jquery-3.6.0.js"></script>
		<script src="./js/jquery.validate.js"></script>
	</head>
	<script type="text/javascript">
		$().ready(function() {
			// validate the comment form when it is submitted
			$("#commentForm").validate();

			// validate signup form on keyup and submit
			$("#signupForm").validate({
				rules: {
					firstname: "required",
					lastname: "required",
					username: {
						required: true,
						minlength: 2
					},
					password: {
						required: true,
						minlength: 5
					},
					confirm_password: {
						required: true,
						minlength: 5,
						equalTo: "#password"
					},
					email: {
						required: true,
						email: true
					},
					topic: {
						required: "#newsletter:checked",
						minlength: 2
					},
					agree: "required"
				},
				messages: {
					firstname: "请输入你的姓名",
					lastname: "Please enter your lastname",
					username: {
						required: "Please enter a username",
						minlength: "Your username must consist of at least 2 characters"
					},
					password: {
						required: "Please provide a password",
						minlength: "Your password must be at least 5 characters long"
					},
					confirm_password: {
						required: "Please provide a password",
						minlength: "Your password must be at least 5 characters long",
						equalTo: "Please enter the same password as above"
					},
					email: "Please enter a valid email address",
					agree: "Please accept our policy",
					topic: "Please select at least 2 topics"
				}
			});

			// propose username by combining first- and lastname
			$("#username").focus(function() {
				var firstname = $("#firstname").val();
				var lastname = $("#lastname").val();
				if (firstname && lastname && !this.value) {
					this.value = firstname + "." + lastname;
				}
			});

			//code to hide topic selection, disable for demo
			var newsletter = $("#newsletter");
			// newsletter topics are optional, hide at first
			var inital = newsletter.is(":checked");
			var topics = $("#newsletter_topics")[inital ? "removeClass" : "addClass"]("gray");
			var topicInputs = topics.find("input").attr("disabled", !inital);
			// show when newsletter is checked
			newsletter.click(function() {
				topics[this.checked ? "removeClass" : "addClass"]("gray");
				topicInputs.attr("disabled", !this.checked);
			});
		});
	</script>
	<body>
		<form class="cmxform" id="commentForm" method="get" action="">
			<fieldset>
				<legend>Please provide your name, email address (won't be published) and a comment</legend>
				<p>
					<label for="cname">Name (required, at least 2 characters)</label>
					<input id="cname" name="name" minlength="2" type="text" required>
				</p>
				<p>
					<label for="cemail">E-Mail (required)</label>
					<input id="cemail" type="email" name="email" required>
				</p>
				<p>
					<label for="curl">URL (optional)</label>
					<input id="curl" type="url" name="url">
				</p>
				<p>
					<label for="ccomment">Your comment (required)</label>
					<textarea id="ccomment" name="comment" required></textarea>
				</p>
				<p>
					<input class="submit" type="submit" value="Submit">
				</p>
			</fieldset>
		</form>
		<form class="cmxform" id="signupForm" method="get" action="">
			<fieldset>
				<legend>Validating a complete form</legend>
				<p>
					<label for="firstname">Firstname</label>
					<input id="firstname" name="firstname" type="text">
				</p>
				<p>
					<label for="lastname">Lastname</label>
					<input id="lastname" name="lastname" type="text">
				</p>
				<p>
					<label for="username">Username</label>
					<input id="username" name="username" type="text">
				</p>
				<p>
					<label for="password">Password</label>
					<input id="password" name="password" type="password">
				</p>
				<p>
					<label for="confirm_password">Confirm password</label>
					<input id="confirm_password" name="confirm_password" type="password">
				</p>
				<p>
					<label for="email">Email</label>
					<input id="email" name="email" type="email">
				</p>
				<p>
					<label for="agree">Please agree to our policy</label>
					<input type="checkbox" class="checkbox" id="agree" name="agree">
				</p>
				<p>
					<label for="newsletter">I'd like to receive the newsletter</label>
					<input type="checkbox" class="checkbox" id="newsletter" name="newsletter">
				</p>
				<fieldset id="newsletter_topics">
					<legend>Topics (select at least two) - note: would be hidden when newsletter isn't selected, but is
						visible here for the demo</legend>
					<label for="topic_marketflash">
						<input type="checkbox" id="topic_marketflash" value="marketflash" name="topic">Marketflash
					</label>
					<label for="topic_fuzz">
						<input type="checkbox" id="topic_fuzz" value="fuzz" name="topic">Latest fuzz
					</label>
					<label for="topic_digester">
						<input type="checkbox" id="topic_digester" value="digester" name="topic">Mailing list digester
					</label>
					<label for="topic" class="error">Please select at least two topics you'd like to receive.</label>
				</fieldset>
				<p>
					<input class="submit" type="submit" value="Submit">
				</p>
			</fieldset>
		</form>
	</body>
</html>
